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WO2000060746A3 - Matrixing for losseless encoding and decoding of multichannels audio signals - Google Patents

Matrixing for losseless encoding and decoding of multichannels audio signals Download PDF

Info

Publication number
WO2000060746A3
WO2000060746A3 PCT/GB2000/001308 GB0001308W WO0060746A3 WO 2000060746 A3 WO2000060746 A3 WO 2000060746A3 GB 0001308 W GB0001308 W GB 0001308W WO 0060746 A3 WO0060746 A3 WO 0060746A3
Authority
WO
WIPO (PCT)
Prior art keywords
decoding
decoder
downmix
losseless
multichannels
Prior art date
Application number
PCT/GB2000/001308
Other languages
French (fr)
Other versions
WO2000060746A2 (en
Inventor
Peter Graham Craven
Malcolm James Law
John Robert Stuart
Original Assignee
Dolby Lab Licensing Corp
Peter Graham Craven
Malcolm James Law
John Robert Stuart
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Priority claimed from GBGB9907919.6A external-priority patent/GB9907919D0/en
Priority claimed from GBGB9907918.8A external-priority patent/GB9907918D0/en
Priority to AU38284/00A priority Critical patent/AU781629B2/en
Priority to EP00917191A priority patent/EP1173925B1/en
Priority to CA2365529A priority patent/CA2365529C/en
Priority to US09/958,200 priority patent/US6611212B1/en
Priority to DK00917191T priority patent/DK1173925T3/en
Priority to JP2000610131A priority patent/JP4610087B2/en
Application filed by Dolby Lab Licensing Corp, Peter Graham Craven, Malcolm James Law, John Robert Stuart filed Critical Dolby Lab Licensing Corp
Priority to AT00917191T priority patent/ATE255785T1/en
Priority to DE60006953T priority patent/DE60006953T2/en
Publication of WO2000060746A2 publication Critical patent/WO2000060746A2/en
Publication of WO2000060746A3 publication Critical patent/WO2000060746A3/en
Priority to US10/643,073 priority patent/US6774820B2/en
Priority to US10/913,160 priority patent/US7193538B2/en
Priority to AU2005204293A priority patent/AU2005204293B2/en

Links

Classifications

    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03M—CODING; DECODING; CODE CONVERSION IN GENERAL
    • H03M7/00—Conversion of a code where information is represented by a given sequence or number of digits to a code where the same, similar or subset of information is represented by a different sequence or number of digits
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04H—BROADCAST COMMUNICATION
    • H04H20/00—Arrangements for broadcast or for distribution combined with broadcast
    • H04H20/86—Arrangements characterised by the broadcast information itself
    • H04H20/88—Stereophonic broadcast systems
    • G—PHYSICS
    • G11—INFORMATION STORAGE
    • G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
    • G11B20/00—Signal processing not specific to the method of recording or reproducing; Circuits therefor
    • G11B20/00992—Circuits for stereophonic or quadraphonic recording or reproducing
    • G—PHYSICS
    • G11—INFORMATION STORAGE
    • G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
    • G11B20/00—Signal processing not specific to the method of recording or reproducing; Circuits therefor
    • G11B20/10—Digital recording or reproducing
    • G11B20/10527—Audio or video recording; Data buffering arrangements
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03M—CODING; DECODING; CODE CONVERSION IN GENERAL
    • H03M7/00—Conversion of a code where information is represented by a given sequence or number of digits to a code where the same, similar or subset of information is represented by a different sequence or number of digits
    • H03M7/30—Compression; Expansion; Suppression of unnecessary data, e.g. redundancy reduction
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N5/00—Details of television systems
    • H04N5/76—Television signal recording
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04S—STEREOPHONIC SYSTEMS 
    • H04S3/00—Systems employing more than two channels, e.g. quadraphonic
    • H04S3/02—Systems employing more than two channels, e.g. quadraphonic of the matrix type, i.e. in which input signals are combined algebraically, e.g. after having been phase shifted with respect to each other
    • G—PHYSICS
    • G11—INFORMATION STORAGE
    • G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
    • G11B20/00—Signal processing not specific to the method of recording or reproducing; Circuits therefor
    • G11B20/00007—Time or data compression or expansion
    • G—PHYSICS
    • G11—INFORMATION STORAGE
    • G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
    • G11B20/00—Signal processing not specific to the method of recording or reproducing; Circuits therefor
    • G11B20/00007—Time or data compression or expansion
    • G11B2020/00014—Time or data compression or expansion the compressed signal being an audio signal
    • G—PHYSICS
    • G11—INFORMATION STORAGE
    • G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
    • G11B20/00—Signal processing not specific to the method of recording or reproducing; Circuits therefor
    • G11B20/10—Digital recording or reproducing
    • G11B20/10527—Audio or video recording; Data buffering arrangements
    • G11B2020/10537—Audio or video recording
    • G11B2020/10546—Audio or video recording specifically adapted for audio data
    • G—PHYSICS
    • G11—INFORMATION STORAGE
    • G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
    • G11B2220/00—Record carriers by type
    • G11B2220/20—Disc-shaped record carriers
    • G11B2220/25—Disc-shaped record carriers characterised in that the disc is based on a specific recording technology
    • G11B2220/2537—Optical discs
    • G11B2220/2562—DVDs [digital versatile discs]; Digital video discs; MMCDs; HDCDs
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04S—STEREOPHONIC SYSTEMS 
    • H04S2420/00—Techniques used stereophonic systems covered by H04S but not provided for in its groups
    • H04S2420/03—Application of parametric coding in stereophonic audio systems

Landscapes

  • Engineering & Computer Science (AREA)
  • Signal Processing (AREA)
  • Theoretical Computer Science (AREA)
  • Multimedia (AREA)
  • Physics & Mathematics (AREA)
  • Mathematical Analysis (AREA)
  • Mathematical Physics (AREA)
  • Pure & Applied Mathematics (AREA)
  • Mathematical Optimization (AREA)
  • Acoustics & Sound (AREA)
  • General Physics & Mathematics (AREA)
  • Algebra (AREA)
  • Compression, Expansion, Code Conversion, And Decoders (AREA)
  • Signal Processing For Digital Recording And Reproducing (AREA)
  • Stereophonic System (AREA)
  • Compression Or Coding Systems Of Tv Signals (AREA)

Abstract

A lossless encoder and decoder are provided for transmitting a multichannel signal on a medium such as DVD-Audio. The encoder accepts additionally a downmix specification and splits the encoded stream into two substreams, such that a two-channel decoder of meagre computational power can implement the downmix specification by decoding one substream, while a multichannel decoder can decode the original multichannel signal losslessly using both substreams. Further features provide for efficient implementation on 24-bit processors, for confirmation of lossless reproduction to the user, and for benign behaviour in the case of downmix specifications that result in overload. The principle is also extended to mixed-rate signals, where for example some input channels are sampled at 48kHz and some are sampled at 96kHz.
PCT/GB2000/001308 1999-04-07 2000-04-07 Matrixing for losseless encoding and decoding of multichannels audio signals WO2000060746A2 (en)

Priority Applications (11)

Application Number Priority Date Filing Date Title
AT00917191T ATE255785T1 (en) 1999-04-07 2000-04-07 MATRIZATION FOR LOSSLESS CODING AND DECODING OF MULTI-CHANNEL AUDIO SIGNALS
DE60006953T DE60006953T2 (en) 1999-04-07 2000-04-07 MATRIZATION FOR LOSS-FREE ENCODING AND DECODING OF MULTI-CHANNEL AUDIO SIGNALS
EP00917191A EP1173925B1 (en) 1999-04-07 2000-04-07 Matrixing for lossless encoding and decoding of multichannels audio signals
CA2365529A CA2365529C (en) 1999-04-07 2000-04-07 Matrix improvements to lossless encoding and decoding
US09/958,200 US6611212B1 (en) 1999-04-07 2000-04-07 Matrix improvements to lossless encoding and decoding
DK00917191T DK1173925T3 (en) 1999-04-07 2000-04-07 Matrix enhancements for lossless encoding and decoding
JP2000610131A JP4610087B2 (en) 1999-04-07 2000-04-07 Matrix improvement to lossless encoding / decoding
AU38284/00A AU781629B2 (en) 1999-04-07 2000-04-07 Matrix improvements to lossless encoding and decoding
US10/643,073 US6774820B2 (en) 1999-04-07 2003-08-18 Matrix improvements to lossless encoding and decoding
US10/913,160 US7193538B2 (en) 1999-04-07 2004-08-05 Matrix improvements to lossless encoding and decoding
AU2005204293A AU2005204293B2 (en) 1999-04-07 2005-08-26 Matrix improvements to lossless encoding and decoding

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
GBGB9907919.6A GB9907919D0 (en) 1999-04-07 1999-04-07 Lossless packing
GB9907918.8 1999-04-07
GB9907919.6 1999-04-07
GBGB9907918.8A GB9907918D0 (en) 1999-04-07 1999-04-07 Lossless packing

Related Child Applications (3)

Application Number Title Priority Date Filing Date
US09/958,200 A-371-Of-International US6611212B1 (en) 1999-04-07 2000-04-07 Matrix improvements to lossless encoding and decoding
US09958200 A-371-Of-International 2000-04-07
US10/643,073 Continuation US6774820B2 (en) 1999-04-07 2003-08-18 Matrix improvements to lossless encoding and decoding

Publications (2)

Publication Number Publication Date
WO2000060746A2 WO2000060746A2 (en) 2000-10-12
WO2000060746A3 true WO2000060746A3 (en) 2001-03-08

Family

ID=26315389

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/GB2000/001308 WO2000060746A2 (en) 1999-04-07 2000-04-07 Matrixing for losseless encoding and decoding of multichannels audio signals

Country Status (15)

Country Link
US (3) US6611212B1 (en)
EP (4) EP2339756A3 (en)
JP (1) JP4610087B2 (en)
KR (1) KR100915120B1 (en)
AR (1) AR023424A1 (en)
AT (1) ATE255785T1 (en)
AU (1) AU781629B2 (en)
CA (3) CA2742649C (en)
DE (1) DE60006953T2 (en)
DK (1) DK1173925T3 (en)
ES (1) ES2208297T3 (en)
MY (2) MY149792A (en)
SG (2) SG2012056305A (en)
TW (1) TWI226041B (en)
WO (1) WO2000060746A2 (en)

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